Intravascular stent tube cross section cutting machining equipment

Abstract

The invention relates to the technical field of intravascular stent tube cutting, in particular to intravascular stent tube cross section cutting machining equipment which comprises a rack, a first base and a second base are arranged on the rack, a base plate and a heightening frame are arranged on the two sides of the first base and the two sides of the second base respectively, an elastic clamping table is arranged above the base plate, and the elastic clamping table can clamp a first cross rod and a second cross rod at the same time; a vertically-installed plate frame is arranged on the side portion of the right-angle plate frame on the heightening frame, a reciprocating driving mechanism is arranged on the outer side of the vertically-installed plate frame, the power output end of the reciprocating driving mechanism is connected with an adjusting rod, a machine base is loaded at the bottom end of the adjusting rod, and an optical fiber laser cutting machine arranged in the Z direction is fixedly installed on the machine base. Rotary motion is converted into smooth Z-direction linear motion through the reciprocating driving mechanism, back clearance and friction interference in traditional driving are eliminated, constant-speed feeding of the cutting head is guaranteed, and therefore the consistency of kerfs is guaranteed, rough texture of the section is eliminated, and the transverse cutting quality of the vascular stent pipe is improved.

Description

Technical Field

[0001] This invention relates to the field of vascular stent tube cutting technology, and specifically discloses a vascular stent tube cross-section cutting processing equipment. Background Technology

[0002] As a core component of interventional medical devices, the manufacturing precision of vascular stents directly impacts their clinical efficacy. Stent manufacturing typically uses precision medical tubing as a raw material, requiring the long tubing to be transversely cut into fixed-length segments for subsequent precision machining, polishing, and coating processes. Transverse cutting is a crucial pre-processing step for segmenting the tubing: firstly, accurately dividing meter-long tubing into shorter segments effectively reduces the clamping length of subsequent processing equipment, preventing bending deformation of slender tubes during high-speed rotation; secondly, standardized transverse lengths facilitate the establishment of process benchmarks for mass production, providing dimensional basis for automated loading and unloading. If the transverse surface has tilting, burrs, or thermal damage, it not only wastes material but also leads to uneven stent wall thickness and decreased mechanical properties due to inaccurate positioning benchmarks. Therefore, developing high-precision transverse cutting equipment is a crucial prerequisite for improving the yield and quality stability of vascular stents.

[0003] Fiber laser cutting equipment is commonly used for the cross-sectional cutting of vascular stents. Current fiber laser cutting equipment often employs a servo motor and ball screw electric drive structure for flexible adjustment of the cutting position. However, due to the coupling effects of servo drive backlash, guide rail friction fluctuations, and the weight of the moving parts, the cutting head of the fiber laser cutting equipment struggles to maintain a constant feed speed during vertical cutting. Specifically, the cutting head's downward and upward movements along the Z-axis require frequent forward and reverse switching of the servo motor. When the cutting head reaches the lowest point in the Z-axis and needs to reverse direction, the control system must instruct the motor to instantly decelerate to zero and quickly reverse. During this process, the ball screw pair inevitably has mechanical backlash. Combined with the inertial load from the weight of the Z-axis moving parts and the friction coefficient fluctuations of the guide rail slider under low-speed, heavy-load conditions, the coupling effect of these three factors causes the actual movement trajectory of the cutting head to deviate significantly from the theoretical command curve.

[0004] The aforementioned non-uniform motion directly manifests as a deviation in the cutting trajectory. Particularly during the reversal, the lag in compensation between the lead screw and nut causes the cutting head to experience a slight pause or jitter pulse at its lowest point. Subsequently, upon reversal, a sudden acceleration occurs due to overcoming static friction. This non-uniform, non-smooth vertical feed characteristic directly leads to a shift in the laser focus position on the tube surface, resulting in a loss of consistent kerf width and a distinct periodic rough texture on the cross-section. More seriously, uneven feed causes laser focus position drift, resulting in a loss of consistent kerf width. The micro-cracks formed on the cross-section surface are difficult to completely eliminate during the subsequent polishing process, severely restricting the processing quality of the vascular stent blank. Summary of the Invention

[0005] To address the problem that the cross-sectional cut surface of vascular stents exhibits obvious periodic rough texture during the current vascular stent cutting process, this invention provides a vascular stent cross-section cutting processing device.

[0006] To address the above problems, the present invention provides the following technical solution: A transverse cutting and processing device for vascular stent tubing includes a frame. The frame is equipped with a first base and a second base capable of synchronous displacement along the X-axis. A base plate and a riser frame, respectively, are fixedly connected to the frame on both sides of the first and second bases. An elastic clamping platform, displaceable along the Y-axis, is positioned above the base plates. The top of the elastic clamping platform is used to load a vascular stent tubing clamp. A first crossbar and a second crossbar are respectively positioned on opposite sides of the first and second bases. The elastic clamping platform can simultaneously clamp the first crossbar and the second crossbar. The frame includes a right-angled plate that can move along the Y-axis, a vertical plate that can move along the X-axis, and a reciprocating drive mechanism on the outer side of the vertical plate. The power output end of the reciprocating drive mechanism is connected to an adjusting rod, and a base is mounted on the bottom end of the adjusting rod. The reciprocating drive mechanism is used to drive the base to reciprocate along the Z-axis. A fiber laser cutting machine arranged along the Z-axis is fixedly installed on the base. The fiber laser cutting machine is positioned above the elastic clamping table and is used to cut vascular stent tubing.

[0007] Preferably, a first X-axis linear module is fixedly installed inside the frame. The first X-axis linear module is provided with multiple sliding ends that are synchronously displaced and are respectively fastened to the first base and the second base. A square through slot is provided on the frame to facilitate the sliding ends of the first X-axis linear module to pass through. The square through slot is arranged between the base plate and the riser frame.

[0008] Preferably, a first thin-film cylinder arranged along the Y direction is fixedly mounted on the substrate, and a support plate is fastened to the piston stroke end of the first thin-film cylinder. The elastic clamping stage is installed on the side of the support plate, and a first slider is fixedly mounted on the bottom of the support plate. A Y-guide rail is provided at the bottom of the first slider and slides therewith. The Y-guide rail is fastened to the substrate.

[0009] Preferably, the elastic clamping table includes two symmetrically arranged clamping plates, each with a semi-circular groove and a right-angled square groove. The inner diameter of the first and second crossbars is the same as the inner diameter of the two semi-circular grooves. The opposite ends of the first and second crossbars are fitted with cylindrical rubber sleeves. A compression spring is provided between the two clamping plates, arranged along the Z-direction. Both ends of the compression spring are fastened with circular plates, which are respectively arranged inside the two right-angled square grooves and fastened to them. A gripper cylinder is fixedly installed on the side of the right-angle plate frame, and the two gripper parts of the gripper cylinder are fastened to the inner walls of the two right-angled square grooves respectively.

[0010] Preferably, a first rod sleeve is fixedly installed inside the first base, and the first crossbar is arranged inside the first rod sleeve and slidably engaged with it. A second diaphragm cylinder arranged along the X direction is fixedly installed on the top of the first base, and a horizontal bracket is fixedly installed on the side of the first base. A transmission plate is hingedly installed inside the horizontal bracket. The top end of the transmission plate is hinged to the piston stroke end of the second diaphragm cylinder, and the bottom end of the transmission plate is hinged to the first crossbar.

[0011] Preferably, a second X-axis linear module is fixedly installed on the second base, and a rod seat is fixedly connected to the sliding end of the second X-axis linear module. The second crossbar is fastened to the rod seat. A cover is fixedly installed on the frame. A passage cavity is provided inside the cover to facilitate the passage of the rod seat. A 3D vision unit is fixedly installed on the top of the passage cavity. A display screen and a start / stop control keypad are installed on the outside of the cover.

[0012] Preferably, a Y-axis linear module is fixedly installed on the height-increasing frame, the sliding end of the Y-axis linear module is tightly connected to the bottom end of the right-angle plate frame, a third X-axis linear module is fixedly installed on the inner side of the right-angle plate frame, the sliding end of the third X-axis linear module is tightly connected to the vertical plate frame, and the bottom of the vertical plate frame is arranged at a height higher than the bottom of the right-angle plate frame.

[0013] Preferably, the reciprocating drive mechanism includes an input shaft that rotates with the vertical mounting frame. A servo motor is fixedly installed on the inner side of the vertical mounting frame. The output shaft of the servo motor is connected to the input shaft. An eccentric wheel is fitted around the input shaft. A frame is provided around the eccentric wheel. A first swing frame and a second swing frame are hinged inside the frame. A loading plate is hinged to the bottom of the first swing frame and the top of the second swing frame. The eccentric wheel is fixedly arranged inside the loading plate.

[0014] Preferably, the frame has a limiting groove arranged along the Z direction, the outer wall of the input shaft is slidably engaged with the inner wall of the limiting groove, the bottom of the frame is fixedly installed with an output shaft arranged along the Z direction, and the outer side of the vertical mounting plate is fixedly installed with a second rod sleeve, which is slidably engaged with the output shaft.

[0015] Preferably, a Z-guide rail is fixedly installed on the outer side of the vertical mounting frame, a second slider is slidably installed on the Z-guide rail, an adjusting seat is fastened to the second slider, the side of the adjusting seat is fastened to the machine base, the top of the adjusting seat is threadedly rotated with the bottom of the adjusting rod, and a rotating wheel is fitted around the bottom of the adjusting rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention designs a reciprocating drive mechanism consisting of a servo motor, an eccentric wheel, a first swing arm, a second swing arm, and a limiting groove. This mechanism converts the continuous rotational motion of the servo motor into a smooth and forced Z-axis reciprocating linear motion of the output shaft through the hinged transmission of the eccentric wheel and the first and second swing arms, and with the guidance of the limiting groove. This purely mechanical motion conversion method completely eliminates the sudden changes and pauses in feed speed caused by lead screw backlash, commutation lag, and friction fluctuations in traditional electric drive structures. This ensures that the fiber laser cutting machine can maintain an absolutely uniform speed and stable trajectory during vertical cutting and lifting. Therefore, the laser focus can be stably applied to the surface of the vascular stent tube, ensuring the consistency of the kerf width and eliminating periodic rough textures and micro-cracks on the cross-section. This significantly improves the cross-sectional cutting quality of the vascular stent blank and lays a solid foundation for subsequent precision machining.

[0017] 2. This invention centers on a first base and a second base capable of synchronous displacement along the X-axis. Both are connected to an elastic clamping platform for holding the tube via a first crossbar and a second crossbar, respectively. The elastic clamping platform consists of two clamping plates with semi-circular grooves. Through a design that combines a compression spring with a gripper cylinder, the first and second crossbars can extend from both sides for secure clamping. Simultaneously, the gripper cylinders can be disengaged at any time, allowing the clamping platform to move precisely along the X-axis with the crossbars. Furthermore, this invention integrates a first X-axis linear module to drive the first and second crossbars to a wide range of X-axis displacement, and a second X-axis linear module for fine-tuning the distance between the second crossbar and the first base to accommodate different tube lengths. This entire structure works in tandem, achieving not only stable transmission and precise positioning of the vascular stent tube during loading and cutting, effectively preventing bending deformation of slender vascular stent tubes during processing, but also providing reliable assurance for establishing process benchmarks and automated loading and unloading through standardized cross-sectional length control.

[0018] 3. The fiber laser cutting machine of this invention is mounted on a finely adjustable base. This base is connected to a reciprocating drive mechanism via an adjusting seat, adjusting rod, and rotating wheel, and is further stabilized by a Z-axis guide rail and a second slider. This allows the operator to fine-tune the initial Z-axis position of the cutting head of the fiber laser cutting machine within a limited space to adapt to the processing requirements of different pipe diameters. At the same time, this invention achieves precise control of the position of the fiber laser cutting machine in the horizontal plane through a Y-axis linear module and a third X-axis linear module, ensuring that it is always aligned with the part to be cut.

[0019] 4. This invention integrates the functional advantages of the aforementioned mechanisms into a complete processing solution through systematic integrated design. Specifically, the 3D vision unit integrated on the top of the equipment can collect real-time visual data on the cross-section of the tube after it has been cut by the reciprocating drive mechanism and positioned by the elastic clamping table, and present it intuitively on the display screen, allowing operators to verify in a timely manner whether the cutting quality and positioning accuracy meet the design expectations of the aforementioned mechanisms. The casters at the bottom of the frame give the equipment flexible mobility to adapt to different workshop layouts, and the design of the housing cavity facilitates tool storage to ensure a clean working area. In conjunction with the protective cover, display screen, and start / stop control keypad, the high-precision cutting of the reciprocating drive mechanism, the stable positioning of the elastic clamping table, and the multi-directional adjustment structure of the cutting head are effectively integrated to form an integrated processing platform that integrates precise motion control, flexible parameter adjustment, real-time quality monitoring, and convenient operation, fully meeting the complex process requirements of high-precision vascular stent tube cross-section cutting. Attached Figure Description

[0020] To more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall device structure of the present invention; Figure 2 This is a schematic diagram of the installation structure of the first and second crossbars of the present invention; Figure 3 This is a schematic diagram of the elastic clamping table mounting structure of the present invention; Figure 4 This is a schematic diagram of the specific structure of the elastic clamping table of the present invention; Figure 5 This is a schematic diagram of the transmission plate mounting structure of the present invention; Figure 6 This is a schematic diagram of the vertical mounting frame structure of the present invention; Figure 7 This is a schematic diagram of the adjusting rod mounting structure of the present invention; Figure 8 This is a schematic diagram of the enclosure structure of the present invention; Figure 9 This is a schematic diagram of the installation structure of the first and second pendulum frames of the present invention; Figure 10 This is a schematic diagram of the eccentric wheel mounting structure of the present invention; Figure 11 This is a schematic diagram of the mounting structure of the adjusting seat of the present invention; Figure 12 This is a schematic diagram of the housing structure of the present invention; In the diagram: 11. Platform, 2. First base, 3. Second base, 4. Base plate, 5. Elevator, 6. Elastic clamping platform, 601. Clamping plate, 602. Semi-circular groove, 603. Right-angled square groove, 604. Compression spring, 605. Circular plate, 606. Gripper cylinder, 7. First crossbar, 8. Second crossbar, 9. Right-angled plate frame, 10. Vertical mounting plate frame, 11. Reciprocating drive mechanism, 1101. Input shaft, 1102. Servo motor, 1103. Eccentric wheel, 1104. Enclosure, 1105. First swing frame, 1106. Second swing frame, 1107. Loading tray, 1108. Restriction groove, 1109. Output shaft, 1110. Second rod sleeve, 1 2. Adjusting rod, 13. Base, 14. Fiber laser cutting machine, 15. First X-axis linear module, 16. Square through slot, 17. First diaphragm cylinder, 18. Bearing plate, 19. First slider, 20. Y-axis guide rail, 21. Cylindrical sleeve, 22. First rod sleeve, 23. Second diaphragm cylinder, 24. Horizontal support, 25. Transmission plate, 26. Second X-axis linear module, 27. Rod seat, 28. Cover, 29. Through cavity, 30. 3D vision unit, 31. Display screen, 32. Start / stop control keypad, 33. Y-axis linear module, 34. Third X-axis linear module, 35. Z-axis guide rail, 36. Second slider, 37. Adjusting seat, 38. Rotary wheel. Detailed Implementation

[0021] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0022] This specific embodiment provides a transverse cutting and processing equipment for vascular stent tubing, such as... Figure 1-12As shown, it includes a frame 1, with casters installed at the four corners of the bottom of the frame 1, enabling the frame 1 to move flexibly; a receiving cavity is provided in the middle of the frame 1 to facilitate the placement of working tools and parts; a top plate is provided on the top of the frame 1, which is horizontally arranged to provide stable horizontal support for the main components of the processing equipment.

[0023] The receiving cavity of the platform 1 is provided with a first X-direction linear module 15, which is fixedly installed on the bottom of the top plate of the platform 1. The platform 1 has a square through slot 16 arranged along the X-direction and above the first X-direction linear module 15. The first X-direction linear module 15 has two sliding ends. Under the drive of the drive motor inside the first X-direction linear module 15, the two sliding ends can be moved synchronously along the X-direction. The two sliding ends of the first X-direction linear module 15 are respectively fastened to the first base 2 and the second base 3, so that the first base 2 and the second base 3 can be moved synchronously along the X-direction.

[0024] A base plate 4 and a riser frame 5 are respectively provided on both sides of the first base 2 and the second base 3 along the Y direction. The base plate 4 and the riser frame 5 are both fixedly connected to the top plate of the frame 1. A first diaphragm cylinder 17 is provided above the base plate 4. The first diaphragm cylinder 17 is arranged along the Y direction with the piston stroke rod end facing the square through slot 16. The first diaphragm cylinder 17 is fixedly connected to the base plate 4 by means of a cylinder plate, so that the first diaphragm cylinder 17 is fixedly loaded above the base plate 4. A support plate 18 is fixedly connected to the piston stroke end of the first diaphragm cylinder 17. A first slider 19 is fixedly installed at the bottom of the support plate 18. A Y guide rail 20 is provided at the bottom of the first slider 19 and slides with it. The Y guide rail 20 is fixedly connected to the base plate 4. By setting the sliding structure of the first slider 19 and the Y guide rail 20, the first diaphragm cylinder 17 can stably drive the support plate 18 to move along the Y direction, ensuring the stability of the support plate 18 when it moves.

[0025] An elastic clamping platform 6 is installed on the side of the bearing plate 18 facing the square through slot 16. The elastic clamping platform 6 includes two symmetrically arranged clamping plates 601; wherein, a mounting plate is fixedly installed on the top of the upper clamping plate 601, and the mounting plate is provided with multiple mounting slots arranged parallel along the Y direction. Each mounting slot is fixedly installed with a mounting block, which can be used to fasten to the clamp for loading vascular stent tubing, thereby stably installing the vascular stent tubing clamp above the elastic clamping platform 6. Both clamping plates 601 have semi-circular grooves 602, and the two semi-circular grooves 602 can form a circular groove that runs through the two clamping plates 601. Both clamping plates 601 have right-angled square grooves 603 on the side facing away from the square through slot 16. A gripper cylinder 606 is fixedly installed on the side of the right-angle plate frame 9. The gripper cylinder 606 is arranged above the first slider 19 and is arranged along the Y direction. The gripper cylinder 606 has two gripper parts that can open and close along the Z direction. The two gripper parts of the gripper cylinder 606 are in contact with the inner walls of the two right-angle square grooves 603 respectively. The minimum gap between the two gripper parts is smaller than the minimum Z-direction dimension of the two right-angle square grooves 603, so that the gripper cylinder 606 can adjust the gap between the two clamping plates 601. Multiple compression springs 604 are provided between the two clamping plates 601. Each compression spring 604 is arranged along the Z direction. Both ends of each compression spring 604 are fastened to a circular plate 605. The two circular plates 605 are respectively arranged inside the two right-angled square slots 603 and fastened to them, so that the upper and lower ends of the compression spring 604 are fastened to the two clamping plates 601 respectively, thereby making the two clamping plates 601 form an elastic structure.

[0026] The first base 2 and the second base 3 are respectively provided with a first crossbar 7 and a second crossbar 8 on opposite sides along the X direction. Both the first crossbar 7 and the second crossbar 8 are horizontally arranged. A first sleeve 22 is fixedly installed inside the first base 2. The first crossbar 7 is arranged inside the first sleeve 22 and slides with it. A second diaphragm cylinder 23 arranged along the X direction is fixedly installed on the top of the first base 2. A horizontal bracket 24 is fixedly installed on the side of the first base 2. The horizontal bracket 24 is arranged between the first crossbar 7 and the second diaphragm cylinder 23. A transmission plate 25 is hinged to the horizontal bracket 24 by a pin. The top end of the transmission plate 25 is hinged to the piston stroke end of the second diaphragm cylinder 23 by a pin. The bottom end of the transmission plate 25 is hinged to the first crossbar 7 by a pin. When the piston stroke end of the second diaphragm cylinder 23 extends or retracts, the first crossbar 7 can slide along the X direction inside the first sleeve 22 under the hinged transmission action of the transmission plate 25.

[0027] A second X-axis linear module 26 is fixedly installed on the second base 3. A rod seat 27 is fixedly connected to the sliding end of the second X-axis linear module 26. The second crossbar 8 is fastened to the rod seat 27. By setting the second X-axis linear module 26, the distance between the rod seat 27 and the first base 2 can be easily adjusted. The inner diameter of the first crossbar 7 and the second crossbar 8 is the same as the inner diameter of the two semi-circular grooves 602. The opposite ends of the first crossbar 7 and the second crossbar 8 are each fitted with a cylindrical rubber sleeve 21. The outer walls of the two cylindrical rubber sleeves 21 can fit against the inner walls of the two semi-circular grooves 602. Under the action of the compression spring 604, the two clamping plates 601 are simultaneously clamped around the first crossbar 7 and the second crossbar 8. When the two jaws of the clamping cylinder 606 are released, the first crossbar 7 and the second crossbar 8 can work together to move the two clamping plates 601 in the X direction, thereby achieving the purpose of adjusting the movement of the vascular stent tube in the X direction on the processing equipment.

[0028] A Y-axis linear module 33 is fixedly installed on the height-increasing frame 5. The sliding end of the Y-axis linear module 33 is fastened to a right-angle plate frame 9. A third X-axis linear module 34 is fixedly installed on the inner side of the right-angle plate frame 9 facing the square through groove 16. The sliding end of the third X-axis linear module 34 is fastened to a vertical plate frame 10. The bottom of the vertical plate frame 10 is arranged at a height higher than the bottom of the right-angle plate frame 9.

[0029] A reciprocating drive mechanism 11 is provided on the outer side of the vertical mounting frame 10. The reciprocating drive mechanism 11 includes an input shaft 1101, which is arranged along the Y direction. A servo motor 1102 is fixedly installed on the inner side of the vertical mounting frame 10 facing away from the square through slot 16. The output shaft of the servo motor 1102 is connected to the input shaft 1101, allowing the input shaft 1101 to rotate with the vertical mounting frame 10, making the input shaft 1101 the power input end of the reciprocating drive mechanism 11. An eccentric wheel 1103 is fitted around the end of the input shaft 1101 away from the output shaft of the servo motor 1102. The fitting position of the input shaft 1101 and the eccentric wheel 1103 is arranged on the outer side of the center of the eccentric wheel 1103. The eccentric wheel 1103 is surrounded by a frame 1104. A first swing frame 1105 and a second swing frame 1106 are hinged inside the frame 1104. The top of the first swing frame 1105 is hinged to the top of the frame 1104, and the bottom of the second swing frame 1106 is hinged to the bottom of the frame 1104. The bottom of the first swing frame 1105 and the top of the second swing frame 1106 are hinged together to a loading plate 1107. The eccentric wheel 1103 is fixedly arranged inside the loading plate 1107. When the input shaft 1101 rotates, it can drive the eccentric wheel 1103 and the loading plate 1107 to rotate together. The frame 1104 has a limiting groove 1108 arranged along the Z-direction. The input shaft 1101 can pass through the limiting groove 1108 and the outer wall of the input shaft 1101 slides against the inner wall of the limiting groove 1108. Due to the eccentric design of the eccentric wheel 1103 and the hinged installation structure of the first swing frame 1105 and the second swing frame 1106, combined with the limiting structure of the limiting groove 1108, the frame 1104 can reciprocate along the Z-direction. An output shaft 1109 arranged along the Z-direction is fixedly installed at the bottom of the frame 1104. A second sleeve 1110 is fixedly installed on the outer side of the vertical mounting plate 10. The second sleeve 1110 slides against the output shaft 1109, which can facilitate the support of the output shaft 1109 to move along the Z-direction, so that the output shaft 1109 becomes the power output end of the reciprocating drive mechanism 11.

[0030] The bottom end of the output shaft 1109 is fastened to the top end of the adjusting rod 12. A Z-axis guide rail 35 is fixedly installed on the outer side of the vertical mounting plate frame 10. Multiple second sliders 36 are slidably installed on the Z-axis guide rail 35. Each second slider 36 is fastened to an adjusting seat 37. The side of the adjusting seat 37 facing the square through slot 16 is fastened to the machine base 13. A threaded hole is opened at the top end of the adjusting seat 37, which allows the adjusting seat 37 to be threadedly rotated with the bottom end of the adjusting rod 12. A rotating wheel 38 is fitted around the bottom end of the adjusting rod 12. By rotating the rotating wheel 38, the depth of the adjusting rod 12 inserted into the threaded hole at the top end of the adjusting seat 37 can be further adjusted. By designing the cooperation structure between the Z-axis guide rail 35 and the second sliders 36, the Z-axis installation height of the machine base 13 can be adjusted within a limited space.

[0031] A fiber laser cutting machine 14 arranged along the Z direction is fixedly installed on the base 13. The fiber laser cutting machine 14 is set above the clamping plate 601 of the elastic clamping table 6. The fiber laser cutting machine 14 can use the high energy density laser beam generated by the fiber laser to focus and act on the surface of the vascular stent tube, thereby achieving precise cutting. The fiber laser cutting machine 14 is the core execution component of the processing equipment.

[0032] Additionally, a cover 28 is fixedly installed on the platform 1, and the bottom of the cover 28 is securely connected to the top plate of the platform 1. A passage cavity 29 is provided inside the cover 28, and the second base 3 can be arranged inside the passage cavity 29, allowing the rod seat 27 to pass through the cover 28 via the passage cavity 29. A 3D vision unit 30 is fixedly installed on the top of the passage cavity 29, with the visual acquisition end of the 3D vision unit 30 facing downwards, enabling visual data acquisition of the vascular stent tubing. The outer side of the housing 28 is equipped with a display screen 31 and a start / stop control keypad 32. The start / stop control keypad 32 can further control the first X-axis linear module 15, the first diaphragm cylinder 17, the second diaphragm cylinder 23, the second X-axis linear module 26, the third X-axis linear module 34, the Y-axis linear module 33, the fiber laser cutter 14, the gripper cylinder 606, and the servo motor 1102, thereby controlling the transverse cutting process of the vascular stent tube. The display screen 31 displays the visual data collected by the 3D vision unit 30 in real time, which makes it easier for operators to judge whether the transverse cutting of the vascular stent tube meets the production standards.

[0033] The working principle of this invention is as follows: The operator can fix the clamp for loading vascular stent tubing onto the mounting plate on top of the upper clamping plate 601; by controlling the expansion of the two clamping jaws of the clamping jaw cylinder 606, the two clamping plates 601 are separated; by controlling the piston stroke rod of the first diaphragm cylinder 17, the bearing plate 18 can be moved along the Y direction, causing the two clamping plates 601 to gradually move above the square through slot 16; by controlling the second diaphragm cylinder 23 and the second X-axis linear module 26, the first crossbar 7 and the second crossbar 8 respectively move from... The two clamping plates 601 extend into their semi-circular grooves 602 on both sides. Then, by controlling the two jaws of the clamping cylinder 606 to retract, the two clamping plates 601 clamp the first crossbar 7 and the second crossbar 8 in the semi-circular grooves 602 under the action of the compression spring 604. By controlling the piston stroke rod of the first diaphragm cylinder 17, the bearing plate 18 drives the clamping cylinder 606 to disengage from the two clamping plates 601, thereby stably arranging the clamping plates 601 between the first base 2 and the second base 3.

[0034] Operators can adjust the Y-axis and X-axis positions of the fiber laser cutter 14 by jointly controlling the Y-axis linear module 33 and the third X-axis linear module 34, so that the cutting head of the fiber laser cutter 14 is positioned above the vascular stent tube. By starting the servo motor 1102, the servo motor 1102 continuously inputs uninterrupted power to the reciprocating drive mechanism 11, causing the input shaft 1101 to rotate continuously. During the rotation of the input shaft 1101, on the one hand, the eccentric wheel 1103 drives the carrier plate 1107 to rotate. Due to the hinge structure of the first swing frame 1105 and the second swing frame 1106, the frame 1104 can swing back and forth. On the other hand, due to the limiting groove 1108 arranged along the Z direction, the input shaft 1101 can further limit the swing direction of the frame 1104, thereby making the frame 1104 swing back and forth continuously along the Z direction. It can be seen that the adjusting rod 12 can move the adjusting seat 37 along the Z direction under the transmission action of the output shaft 1109, thereby adjusting the Z-direction position of the base 13 of the fiber laser cutting machine 14, so that the cutting head of the fiber laser cutting machine 14 can cut the vascular stent tube transversely. With the cooperation and adjustment of the first X-direction linear module 15 and the third X-direction linear module 34, the vascular stent tube can be transversely cut into multiple tubes to facilitate the subsequent precision processing of the vascular stent tube.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A transverse cutting and processing equipment for vascular stent tubing, comprising a frame (1), characterized in that, The platform (1) is provided with a first base (2) and a second base (3) that can be synchronously displaced along the X direction. The first base (2) and the second base (3) are respectively provided with a base plate (4) and a heightening frame (5) that are fastened to the platform (1) on both sides. An elastic clamping platform (6) that can be displaced along the Y direction is provided above the base plate (4). The top of the elastic clamping platform (6) is used to load a vascular stent tubing clamp. A first crossbar (7) and a second crossbar (8) are respectively provided on opposite sides of the first base (2) and the second base (3). The elastic clamping platform (6) can simultaneously clamp the first crossbar (7) and the second crossbar (8). The heightening frame (5) is provided with… A right-angle plate frame (9) that can be displaced along the Y direction is provided on the side of the right-angle plate frame (9) and a vertical plate frame (10) that can be displaced along the X direction is provided on the side of the vertical plate frame (10). A reciprocating drive mechanism (11) is provided on the outside of the vertical plate frame (10). An adjusting rod (12) is connected to the power output end of the reciprocating drive mechanism (11). A base (13) is mounted on the bottom end of the adjusting rod (12). The reciprocating drive mechanism (11) is used to drive the base (13) to reciprocate along the Z direction. A fiber laser cutter (14) arranged along the Z direction is fixedly installed on the base (13). The fiber laser cutter (14) is set above the elastic clamping table (6) and is used to cut vascular stent tubes.

2. The vascular stent tubing cross-section cutting and processing equipment according to claim 1, characterized in that, The first X-direction linear module (15) is fixedly installed inside the frame (1). The first X-direction linear module (15) is provided with multiple sliding ends with synchronous displacement and is respectively fastened to the first base (2) and the second base (3). The frame (1) is provided with a square through slot (16) to facilitate the sliding end of the first X-direction linear module (15) to pass through. The square through slot (16) is arranged between the base plate (4) and the heightening frame (5).

3. The vascular stent tubing cross-section cutting and processing equipment according to claim 1, characterized in that, A first diaphragm cylinder (17) arranged along the Y direction is fixedly installed on the substrate (4). A bearing plate (18) is fastened to the piston stroke end of the first diaphragm cylinder (17). The elastic clamping table (6) is installed on the side of the bearing plate (18). A first slider (19) is fixedly installed at the bottom of the bearing plate (18). A Y guide rail (20) is provided at the bottom of the first slider (19) and slides therewith. The Y guide rail (20) is fastened to the substrate (4).

4. The vascular stent tubing cross-section cutting and processing equipment according to claim 1, characterized in that, The elastic clamping table (6) includes two symmetrically arranged clamping plates (601). Each clamping plate (601) has a semi-circular groove (602) and a right-angled square groove (603). The inner diameter of the first crossbar (7) and the second crossbar (8) is the same as the inner diameter of the two semi-circular grooves (602). Cylindrical rubber sleeves (21) are securely fitted to the opposite ends of the first crossbar (7) and the second crossbar (8). A spacer is provided between the two clamping plates (601). A compression spring (604) is arranged along the Z direction. Both ends of the compression spring (604) are fastened to a circular plate (605). The two circular plates (605) are respectively arranged inside the two right-angled square grooves (603) and fastened to them. A gripper cylinder (606) is fixedly installed on the side of the right-angled plate frame (9). The two gripper parts of the gripper cylinder (606) are fastened to the inner walls of the two right-angled square grooves (603) respectively.

5. The vascular stent tubing cross-section cutting and processing equipment according to claim 1, characterized in that, A first rod sleeve (22) is fixedly installed inside the first base (2). The first crossbar (7) is arranged inside the first rod sleeve (22) and slides with it. A second diaphragm cylinder (23) arranged along the X direction is fixedly installed on the top of the first base (2). A horizontal bracket (24) is fixedly installed on the side of the first base (2). A transmission plate (25) is hinged inside the horizontal bracket (24). The top end of the transmission plate (25) is hinged to the piston stroke end of the second diaphragm cylinder (23). The bottom end of the transmission plate (25) is hinged to the first crossbar (7).

6. The vascular stent tubing cross-section cutting and processing equipment according to claim 1, characterized in that, A second X-axis linear module (26) is fixedly installed on the second base (3). A rod seat (27) is fixedly connected to the sliding end of the second X-axis linear module (26). The second crossbar (8) is fastened to the rod seat (27). A cover (28) is fixedly installed on the frame (1). A passage cavity (29) is provided inside the cover (28) to facilitate the passage of the rod seat (27). A 3D vision unit (30) is fixedly installed on the top of the passage cavity (29). A display screen (31) and a start / stop control keypad (32) are installed on the outside of the cover (28).

7. The vascular stent tubing cross-section cutting and processing equipment according to claim 1, characterized in that, A Y-axis linear module (33) is fixedly installed on the height-increasing frame (5). The sliding end of the Y-axis linear module (33) is tightly connected to the bottom end of the right-angle plate frame (9). A third X-axis linear module (34) is fixedly installed on the inner side of the right-angle plate frame (9). The sliding end of the third X-axis linear module (34) is tightly connected to the vertical plate frame (10). The bottom height of the vertical plate frame (10) is higher than the bottom height of the right-angle plate frame (9).

8. The vascular stent tubing cross-section cutting and processing equipment according to claim 1, characterized in that, The reciprocating drive mechanism (11) includes an input shaft (1101) that rotates with the vertical mounting plate (10). A servo motor (1102) is fixedly installed on the inner side of the vertical mounting plate (10). The output shaft of the servo motor (1102) is connected to the input shaft (1101). An eccentric wheel (1103) is fitted around the input shaft (1101). A frame (1104) is provided around the eccentric wheel (1103). A first swing frame (1105) and a second swing frame (1106) are hinged inside the frame (1104). A loading plate (1107) is hinged to the bottom end of the first swing frame (1105) and the top end of the second swing frame (1106). The eccentric wheel (1103) is fixedly arranged inside the loading plate (1107).

9. The vascular stent tubing cross-section cutting and processing equipment according to claim 8, characterized in that, The enclosure (1104) has a limiting groove (1108) arranged along the Z direction. The outer wall of the input shaft (1101) is slidably engaged with the inner wall of the limiting groove (1108). An output shaft (1109) arranged along the Z direction is fixedly installed at the bottom of the enclosure (1104). A second rod sleeve (1110) is fixedly installed on the outer side of the vertical mounting plate (10). The second rod sleeve (1110) is slidably engaged with the output shaft (1109).

10. The vascular stent tubing cross-section cutting and processing equipment according to claim 1, characterized in that, A Z-guide rail (35) is fixedly installed on the outside of the vertical mounting plate frame (10). A second slider (36) is slidably installed on the Z-guide rail (35). An adjusting seat (37) is fastened to the second slider (36). The side of the adjusting seat (37) is fastened to the machine base (13). The top of the adjusting seat (37) is threadedly rotated with the bottom of the adjusting rod (12). A rotating wheel (38) is fitted around the bottom of the adjusting rod (12).

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